Table-locking device.



N0. 774,046. v PATENTED NOV. l, 1904. G. A. DAVIS. TABLE LOGKING DEVIUE.

APPLIOATION FILIED APR. 10, 1903.

Mam SJW I=w FTT@RNEY N0. 774,046. PATENTED NOV. 1,1904.

G'r. A. DAVIS.

TABLB LOCKING DEVIOE.

APPLIGATION FI LED APB..10 1903.

flarv y J Park/m; I

RNEY

PATENTED NOV. l, 1904.

G. A. DAVIS.

TABLE LOOKINGDEVIGE.

APPLIUATION FILEID APR- 10 1903.

4 SHEBTS-SHBE'I' 3.

N0 MODEL.

)NVENTBK v" E N R 0 T 7 fl W w mm i JS @NITED STATES Patented November1, 1904.

PATENT Unsinn GEORGE A. DAVIS, OF GRAND RAPIDS, MICHIGAN.

TABLE-LOGKING DEVIOE.

SPE'CIFICATION forming part of Letters Patent N0. 774,046, datedNovember 1, 1904.

Applica.tion filed April 10, 1903.

T0 all w710m it may concern:

Be it known that I,GEORGE A. DAVIS, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of l\lichigan,have invented new and useful Improvements in Table-Locking Devices, 0fwhich the following is a specification.

This invention relates to a new and useful device f01 locking togetherthe pa1ts 0f an extension-table und also for drawing the parts securelytogether before they are locked.

The invention may be used either with or without extension-leaves; andtheinvention in a general way consists in coxnbining with the table of alocking-rod suitable rneans lor operating the seid rod to engage thesarne with a catch 01 catches f0r drawing and locking the table firrnlytogether.

The invention hirther consists in the comstruction and cornbination ofparts hereinafter described. w

The objects of rnv invention are, Erst, t0 draw together and firmly locktl1e top of an extension-table; second, to support a locking- 10dbeneath the table-top and upon one of the sections thereof and tocornbine with seid rod suitable means for automatically engaging anddisengaging the rod ffom a eatch carried on the other section of thetable; third, t0 furnish a locking device that may be used with anynun1ber of extension-leaves 01' without extension-leaves,as rnay bedesired. These objects I accomplish by means 0f the mechanisrnillustrated in the accornpanying drawings, in whieh Figure 1 shows aside view of a portion of a table-top with rny preferred form of lockingdevice in its disengaged position. Fig. 2 shows a lilze view 0f thetable with the locking device engaged, retaining the two parts of thetable firrnly together. Fig. 3 shows a detached inverted plan view ofthe locking- 1'0d, the catch With which seid locking-rod engages, andone forrn of operating the seid r0d whereby same rnay be engaged anddisengaged. Fig. 4: shows the two sections of the table separated, withan extension-leztf in place and the means f01' using rny invention whenleaves are inserted in the table. Figs. 5, 6, 7, 8, and 9 show modifiedforms of the Serial N0. 152,021. (N0 model.)

device illustrated in Figs. l, 2, and 3. Fig. 10 shows the locking device illustrated in Figs. 8 and 9 detached. Fig. 11 shows still furtherthe modified forn1s of the device illustrated in Figs. l, 2, and 3. Fig.12 shows the form illustrated in Fig. 11, when the locking-rod is inengagement with the cateh. Fig. 13 shows the lockingdevice illustratedin Fig. 11, when the locking-rod is thrown out of engagement with thecatch. Fig. 14 shows a perspective view 0f the fulcrurn-plate used inconnection with the device shown in Figs. ll, 12, and 13.

Sirnilar letters refer 130 sirnilar parts throughout the several views.

In the drawings, A anal A represent the two sections of the table-top. Bshows the locking-rod, provided at its free end with a hook er catch C.The other end 0f the lock- 1ng-rod B in the exarnple 0f rny invention esshown in the drawings is pivoted to the eccentric G, the eccentric Gbeing carried or retained in a suitalole case or other means forattaching the same to the table-section A. A handle er lever H is usedt0 operate the eccentric G, which gives a longitudinal movement to theI'0d B. The section A 0f the tabletop is provided with a catch of anysuitable for1n, as shown by D. The I'0d B is supported by the loop E,the loop E allowing the 1"0d to pass loosely thl'ough it, so es not tointerfere With its longitudinal motion.

In order to furnish means for automatically engaging and disengaging thehook C With 01' from the catch D, the rod B is bent at F, es shown, soas to form a wedge 0r can1 movement. The carn part 0f the rod engaginqwith the loop E es the seid rod is drawn to the left, es shown in thedrawings, Will reise the hook 01' free end of the seid loclzing-rod,thereby engaging the hoch C with tl1e catch D, and the further movernentof the eccentric by means of the handle H will exert a longitudinalstrain upon the rod, drawing the sections A and A of the table together,and the eccentric by its forrn Will retain the r0d in its lockingposition, as shown in Figs. 3 and 4. The reverse motion 0f the eccentricWill give the reverse longitudinal motion to the rod B, removing the camportion F frorn the loop E,

disengaging Ehe hook C fronn Ehe caEch D. WVhen extension-leaves a1ensed, each leaf is provided WiEh a loelzing-rod secnred E0 Ehe underside Ehereof,and Ehe hool C 0f Ehe locking-rod, whieh is aEtaehed Eo EheEion, engages direcEly WiEh Ehe hook on Ehe locking-rod eanied hy EheexEension-leaf adjacent Eo Ehe secEion of Ehe Eable earrymg Ehe Saidlooking-xod B.

In Fig. eL I. have illusEraEed Ehe Eable-leaf This 1'0d B hy V and iEsloeking-rod by B. is secured E0 Ehe under side 01: Ehe leaf in anysuiEable manner. I prefer, however, E0 use a screw passing Ehrough asl0E in Ehe 10d B, which screw is shown by L. using a sloE is Eo allowEhis 10d Eo adjusE iEeelf slighEly Eo variations caused by shrinking andswelling 01 hy 0Eher defecEs in Ehe Eahleleaves. The rod B is preferablya spring- 1'0d and is provided wiEh a hook R, whieh hook R engages WiEhEhe catch D on Ehe Ea ble-secEion A. This engage1nent mayhe an- Eornaticwhen Ehe Eable-leaf is plaeed 0n Ehe exEension-hars and slid in conEacEWiEh Ehe seoEion A of Ehe Eable, as shown in Fig. 4.

The 10d B is provided also wiEh a hook 01' i catoh T, wiEh which Ehehook C on Ehe 10d B engages and disengages 1D Ehe sanne manner as 1Eengages and disengages W1Eh Ehe hook D when no exEension-leaves areused. Any nun1- her 0f leaves rnay be used, each leaf being constructedlil e all 0Eher leaves, so EhaE Ehe descripEion 0f one will answcrfo1all. \Vhen more Ehan one leaf is used, Ehe leaf nearest E0 Ehe parE Aenga1ges with A, Ehe leaf nexE Eo EhaE engages with Ehe leaf V, and soon, Ehe locking-rod B engaging; WiEh Ehe extensionleaf nearest o1adjaeent- Eo Ehe secEion A.

Referring now Eo Figs. 6, and 7, F shows Ehe modification of Ehe rneansf01 raising and lowering Ehe rod B, and Ehe casing f01 Ehe eccentrie Gis provided wiEh Ehe nach G. The handle H is provided WiEh a spring-dogH, which d0g engages WiEh Ehe rack G and holde Ehe eccenEric in anyxeqnired posiEion.

In Figs. 8, 9, and 10 I have shown a modified form of Ehe device f01raising and lowering Ehe i0d B. This device eonsists in a piv- 0Eed loopJ. The pivoted loop J carries Ehe rod B and is supported by a plate K01' by 0Eher suitable n1eans and Eurnsupon Ehe pivoE I, which aEtachesEhe said loop Eo Ehe plaEe K. The movennenE of Ehe rod is longitudinal,and when Ehrewn backward f101n Ehe position shown in Fig. 8 Eo EheposiEion shown in Fig. 9 Ehe f1ee end of Ehe 1od is raised so EhaE Ehehook C engages wiEh Ehe caEch D.

The operaEion 01" Ehe device 1nodified as above described is preciselyEhe sarne as Ehe operaEion o1 Ehe deviee shown in Figs. 1, 2, and

In Figs. 11, 12, and 13 Ehe locking-rod is rnoved by Ehe eccenEric or0Eher suitable means Ehe san1e as above described; buE Ehe f1ee end ofEhis locking-rod swings horizon- Eable-secl Eall y in order Eo 1nakeengagemenE and disengagement wiEh and fron1 Ehe catch I). In oraler Eoaceornplish Ehis swinging resulE, I l provide what I Eerm afulcrum-bloek I\/I, i which fulcrum-blocl: is secured Eo Ehe under sideof Ehe Eable-Eop seeEion A in any suiEable nnanner and is provided WiEhan opening N, Ehrough whioh Ehe 10d passes, and Ehus by Eu1ning Ehehandle H f1otn Ehe position shown in Fig. 12 Eo Ehe position shown inFig. 13 1 Ehe free end 0f Ehe rod B is swung laEerally, i so EhaE Ehehook portion C engages and disl engages WiEh Ehe cateh D, as mav berequired. 1 ()Eher forme of engagement and disengagel menE 0f Ehelocking-rod WiEh Ehe caEeh n1ay be used WiEh0uE deparEing frorn Ehespi1iE 0f rny invenEion, and I d0 noE wish Eo confine myself Eo Ehespecifio construction 0f parEs herein described.

Having Ehus deserihed nny invenEion, whaE I elairn Eo h ave invented,and desire Eo secure by LetEers IaEenE, is

l. In a-locking device f01 sectional Eablel Eops, a shiftable 10d havingiEs inne! end provided WiEh n1eans adapted Eo engage WiEh Ehe 0EhersecEion of Ehe Eahle-Eop f01 conneeEing l Ehe sections Eogether, meanscarried hy one l of said sections and connecEed wiEh Ehe ouEer l end 0'fsaid 10d 'f01 shifting said 10d in opposiEe direetions, and rneansearried by one of Ehe sections for mov ing said connecEingmeans Eoengaging posiEion when seid 10d is shifted l in one direction and ouE ofengaging posiEion l when said 10d is shifEed in Ehe opposite direc-Eion.

2. In an exEension-Eable, in combination l WiEh one of Ehe secionsEhereof, of a lockingrod provided WiEh a hook aE iEs free end, a caEeh011 Ehe 0Eher secEion of Ehe Eable, an ex- Eension-leaf adapEed Eo fiEheEween Ehe seid secEions, a longiEudinally-movable l0cl;ing 10dsuspended frorn Ehe lower face of said ex- Eension-leaf and providedWiEh a hook aE one end adapEed Eo engage WiEh a eaEch on one of Ehe saidsections, said loCking-rod carried by Ehe extension-leat furEherprovided wiEh a hook aE iEs oEher end adapEed Eo engage WiEh Ehe hook onEhe f1ee end of said firsE-n1en- Eioned loeking-rod, and means f01longitudinally rnoving said firsE-menEioned looking-rod inEo and ouE 0fengagen1enE \V1Eh Ehe 10d narried by Ehe Eable-leaf.

8. In an exEension-Eahle, Ehe cotnbinaEi0n wiEh a secEion Ehereof, of alongiEudinallymoving locking-rod provided Wll3l1 a hook aE iEs free end,a caEch 011 Ehe 0Eher section, a plnraliEy of extensionleaves,alongitudinallymovahle locking rod suspended fron1 Ehe lower face of eachleaf and provided wiEh a hook aE-either end, whereby said movablelocking-rods are adapEed Eo be connected Eogether and Eo EhefirsE-nnentioned longiEudinally-xnoving locking-rod and said caEeh andEhe rehy connect Ehe, leaves Eo Ehe seeEions 0E 1 Ehe Eable, and meansf01 1noving said firsE- mentioned longitudinally-movinglockii1g-rod intoengagement with tl1e locking-rod on the leaf adjacent thereto.

I. In asectional extension-table, tl1e cornbination With one of thesections thereof, of a locking-rod Ct1l'i(l by said section and providedwith a hook at its free end, a catch on the other section of the saidtable, an extension-leaf adapted to fit between tl1e said sections, amovable locking-rod suspended from the lowerface of said extension-leafand provided With a hook at one end adapted to engage With a catoh 0none of thesaid sections, said locking-rod carried loy said extensionleaffurther provided with a hook at its other end adapted to engage with thehook on the free end of said first-mentioned locking-rod, und apivotally-mounted plate provided with a handle and ecoentrioallyconnected with the first-n1entioned locking-rod for giving longitudinalmotion tl1ereto for the purpose of engaging and disengaging the samefronn the hook on the 1od carried by the table-leaf.

In a sectional extension-table, the combination with a section thereof,of alongitudi nailly-moving locking-rod carried by said section andprovided with a. hook at its free end, a catch on the other section, aplurality of extension-leaves, a movable locking-rod suspended fronn thelower face of each leaf and provided with a hook at either end, wherebysaid rnovable lockingrods are adapted to be connected together and totl1e Said longitudinally-moving locking-rod and to said catoh andthereby oonnect the leaves to the sections of the table, and apivotally-rnounted plate provided with a handle and eccentricallyconnected to said longitudinally-moving locking-rod for moving said rodinto and out of engagernent with tl1e locking-rod on the leaf adjacentth ereto.

6. In asectional extensiontable, tl1e cornbination witl1 one 015 thesections thereof, 0f a locking -rod provided with a hook at its freeend, a catch on the other section of the said table, an extension-leafadapted to fit between the said sections, a movable locking-rodsuspended from the lower face of said extensionleaf und provided Witl1 ahook ab one end adapted to engage With a catcl1 on one of said sections,said locking-rod cmried by said extension-leaf further provided with ahook at its other end adapted to engage with the hook on the free end ofsaid first-rnentioned lockingrod, rneans f01 imparting longitudinalmotion to said first-mentioned locking-rod, and supporting means for thefirst-mentioned locking-rod carried by one of said seotions, said sm.portingmeans when said rod is moved longitudinally adapted to cause thefree end of said 10d to automatically engage and disengage with onehooked end of said rnovable locking-rod.

7. In a sectional extension-table, the combinntion with a sectionthereof, of a longitudinally-moving locking-rod provided With a hook atits free end, a catch on the other section, a plurality ofextension-leave,n movable locking-rod suspended frorn the lower face ofeach leaf and provided with a hook at either ond, whereby said rnovablelocking-rods are adapted to be connected togethor and to the saidlongitudinally-moving locking-'rod and 130 said oatoh and therebyconneot the leaves t0 the seotions of tho table, means for im partinglongitudinal motion to said first-rnentioned looking-rod, and supportingmeans for the first-mentioned locking-rod, said supporting means carriedby one of said sections, said supporting means when saidfirst-rnentioned rod is moved longitudinally adapted to cause automaticengaging and disengaging of the free end of said rod with one l1ookedendet the movable looking-rod suspended from the face of tl1e adjacentleaf.

8. In a sectional extension-table, the connbination With one of thesections thereof, of a locking-rod provided With a hook at its free endand having a portion of its length bent, a catoh 0n the adjacent sectionof said table, suitable means for imparting a longitudinal motion tosaid locking-rod, anal a supporting means for the locking-rod, saidsupporting means when said locking-rod is moved longitudinally adaptedto engage With said bent portion and thereby cause the free end o1 saidlocking-rod to automatically engage and disengage With the ca'toh on theadjacent section of the table.

9. A locking device for a sectionzl taloletop, comprising a shiftablelocking-rod provided with a projection, catoh mearis coperative Withsaid projection, means engaging said rod intermediate its ends forsuspending it and for Inoving said projectioninto and out of engagementwith said catoh means when said rodis shifted and means conneoted to theouter end of said r.od f01 shifting it in both directions.

10. A locking device for a sectional taloletop, comprising a shiftablelocking-rod provided with a projection, catch means coperative with saidprojection, means engaging said rod intermediate its ends for suspendingit and for moving said projection into and out of engagement with saiolcatch means when said rod is shifted and means connected to the outerend of said rod for shifting it in botl1 direetions and for locking saidrod in its set position.

ll. A locking device for a sectional taloletop, comprising a shiftablelocking-rool bent intermediate its ends and further provided with aprojection, oatch rneans coperative wit h said projection, means forsuspending said rod and engaging said bent portion and adapted when said10d is shifted to move said projection into and out of engagement witl1said catch means and means oonnected to the outer end 0f said rodadapted when operated to shift said rod in both direotions.

IIO

12. 111 cornbination in (L sectional table, a for impmting alongitudinal movement 110 ehe longitudinally-movable r0d Cllli6d thereby1'0d. 10 f01 connecting the sections together, a catch In testimonywhereof 1hzwe hereunto set n1y 1neans cmried by one 0f the sections,means band in presence 0f 11W0 subscribing witnesses.

carried bythe other 0f the sections und adapt- GEORGE A. DAVIS. ed whensaid 10d 15 operated to engage and \V1tnesses: 1nove he free end of said10d 1nto und 0ut of EDWARD TAGGART,

engagement with said catch means, and means MARY S. TOOKER.

